###Introduction: ### ####What is API Resources in Laravel####

LARAVEL's resource classes allow you to expressively and easily transform your models and model collections into JSON.Basically you can generate a nice json formatted data right from Eloquent. Let’s learn how to generate api resources.Consider you have a user table in your database and you want to generate api resources for your User model.Run following command on your terminal window while being on laravel project root directory:

install Passport via the Composer package manager: composer require laravel/passport=~4.0

The Passport service provider registers its own database migration directory with the framework, so you should migrate your database after registering the provider. The Passport migrations will create the tables your application needs to store clients and access tokens: php artisan migrate

command to create the encryption keys needed to generate secure access tokens. In addition, the command will create "personal access" and "password grant" clients which will be used to generate access tokens: php artisan passport:install

After running this command, add the Laravel\Passport\HasApiTokens trait to your App\User model. This trait will provide a few helper methods to your model which allow you to inspect the authenticated user's token and scopes:

<?php

namespace App;

use Laravel\Passport\HasApiTokens;
use Illuminate\Notifications\Notifiable;
use Illuminate\Foundation\Auth\User as Authenticatable;

class User extends Authenticatable
{
    use HasApiTokens, Notifiable;
}

Next, you should call the Passport::routes method within the boot method of your AuthServiceProvider. This method will register the routes necessary to issue access tokens and revoke access tokens, clients, and personal access tokens:

<?php

namespace App\Providers;

use Laravel\Passport\Passport;
use Illuminate\Support\Facades\Gate;
use Illuminate\Foundation\Support\Providers\AuthServiceProvider as ServiceProvider;

class AuthServiceProvider extends ServiceProvider
{
    /**
     * The policy mappings for the application.
     *
     * @var array
     */
    protected $policies = [
        'App\Model' => 'App\Policies\ModelPolicy',
    ];

    /**
     * Register any authentication / authorization services.
     *
     * @return void
     */
    public function boot()
    {
        $this->registerPolicies();

        Passport::routes();
    }
}

Finally, in your config/auth.php configuration file, you should set the driver option of the api authentication guard to passport. This will instruct your application to use Passport's TokenGuard when authenticating incoming API requests:

'guards' => [
    'web' => [
        'driver' => 'session',
        'provider' => 'users',
    ],

    'api' => [
        'driver' => 'passport',
        'provider' => 'users',
    ],
],